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Flow cytometry for high throughput screening

a flow cytometry and high throughput technology, applied in the field of flow cytometry apparatus, can solve the problems of limited use of flow cytometry in drug discovery, inability to analyze multiple samples, and general inapplicability of flow cytometry to high throughput screening in drug discovery, etc., and achieve the effect of high throughput screening

Inactive Publication Date: 2005-04-12
STC UNM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention provides a flow cytometry apparatus and method for detecting particles from multiple samples. The apparatus includes a means for moving samples with particles into a fluid flow stream, introducing a separation gas between samples, and selectively analyzing each sample for particles. The technical effect is that the apparatus and method can efficiently and accurately detect particles from multiple samples simultaneously, which is useful for high throughput screening.

Problems solved by technology

However, a deficiency with conventional flow cytometry is that it does not allow for the analysis of multiple samples consisting of multiple cells or particles in a rapid manner, a fact that has limited the uses of flow cytometry in drug discovery.
Because of its low throughput, flow cytometry has generally not been considered applicable to high throughput screening in drug discovery.

Method used

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example

Using a flow cytometer apparatus set-up similar to that shown in FIG. 1A, commercial peristaltic tubing with thick walls (PharMed TM; 0.02 inch inner diameter, 3.69 mm outer diameter, polypropylene elastomer) was compared with another type (0.02 inch inner and 0.06 inch outer diameter Tygon Microbore TM, formulation S-54-HL) that had thin walls and was considerably stiffer. FIGS. 2A and 2B illustrate the flow cytometer results using the PharMed TM tubing to move samples 202, 206, 210, and 214 of Coulter Flow-Check beads having a proprietary fluorochrome as a fluorescence tag and four samples 204, 208, 212, and 216 of Flow Cytometry Standards Corporation having fluorescein as a fluorescence tag. FIG. 2A is a graph of Forward Scatter vs. Side Scatter with a gate around the particles aligned in the laser beam of the flow cytometer. FIG. 2B is a graph of Fluorescence vs. Time (1024 channels=60 seconds). The samples in FIG. 2 are moved through the tubing using a peristaltic pump operatin...

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Abstract

The present invention, provides a flow cytometry apparatus for the detection of particles from a plurality of samples comprising: means for moving a plurality of samples comprising particles from a plurality of respective source wells into a fluid flow stream; means for introducing a separation gas between each of the plurality of samples in the fluid flow stream; and means for selectively analyzing each of the plurality of samples for the particles. The present invention also provides a flow cytometry method employing such an apparatus.

Description

BACKGROUND OF THE INVENTION1. Field of the InventionThe present invention relates to a flow cytometry apparatus.2. Description of the Prior ArtFlow cytometry is used to characterize cells and particles by making measurements on each at rates up to thousands of events per second. The measurement consists of simultaneous detection of the light scatter and fluorescence associated with each event. Commonly, the fluorescence characterizes the expression of cell surface molecules or intracellular markers sensitive to cellular responses to drug molecules. The technique often permits homogeneous analysis such that cell associated fluorescence can often be measured in a background of free fluorescent indicator. The technique often permits individual particles to be sorted from one another.However, a deficiency with conventional flow cytometry is that it does not allow for the analysis of multiple samples consisting of multiple cells or particles in a rapid manner, a fact that has limited the...

Claims

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Application Information

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Patent Type & Authority Patents(United States)
IPC IPC(8): G01N15/14G01N35/08B01L3/00G01N35/00
CPCG01N15/1459G01N35/085G01N21/6486B01L3/5085G01N35/0099G01N35/1095G01N2015/1402Y10T436/2575G01N2015/1477G01N2015/149Y10T436/119163Y10T436/117497Y10T436/118339G01N2015/1413G01N15/149G01N15/1404G01N15/01G01N15/1436G01N21/6428G01N2015/1006G01N2021/6439G01N2201/06113
Inventor SKLAR, LARRY AEDWARDS, BRUCE SKUCKUCK, FREDERICK W
Owner STC UNM
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